.NET SFTP Library
Transfer files over SSH with SFTP with this .NET SFTP component.
The .NET SFTP Library by Kellerman Software allows you to transfer files and directories, create directories, and delete directories on an SSH server. Operations can be performed on a single directory or an entire directory tree. The .NET SFTP Library can also automatically reconnect and resume when a network connection drops. Asynchronous and synchronous operations are supported.
Reference: http://www.kellermansoftware.com/p-41-net-sftp-library.aspx